Hot tub booster seat



FIG. 1 is a perspective view of a hot tub booster seat showing my new design;

FIG. 2 is another perspective view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a left side view thereof;

FIG. 6 is a right side view thereof;

FIG. 7 is a top plan view thereof; and,

FIG. 8 is a bottom plan view thereof.

The broken lines in the figures are for the purposes of illustrating portions of the hot tub booster seat, which form no part of the claimed design. 

CLAIM The ornamental design for a hot tub booster seat, as shown and described. 